PLAXT-BEARIXG OUTCROPS. 43 



thickness of gray saiidv clavs of (he Ackcrinan Kluimnus marginatus. 



formation of the Wilcox -roup. Tlie outcrop ]Rha.nnu.raar,.mu.tusai>i.-ulat,.s. 



IS pro])ably less than 100 foot above the base Terminalia KsLvana. 



of the Wilcox, as tiie contact witii the Sucar- 



noochee clay of the underlying Midway group Of these 31 species only tiie followuig 10 arc 



is onl_y about IV miles to the east. The fol- peculiar to this outcrop: A-s/dtnium Iturlci/- 



lowing species occur at (liis outcrop, wliich (usis, Admimi leiocarpa, Binnclia Jturlej/ensl's, 



throughout the systematic portion of my work Conlla {?) loini, Knr/nun hilfianliana. Far/ara 



is referred to sinijily as '•Hurleys:" hudeijensis, Glf(litsioj)hiilhim hihiardianinn, L>/- 



, . , , qodiiim, hinervntnm, Pisorna chloroiihi/lloides, 



At^plemuin liurli-vciisia. ,7,7 • , • 7 ^ 'ivr, 



■Vsimina leiocarpa """ Jinamniis mcmnnatris ajnculaiiis. l<ilf(>en 



Btimt'lia hurleyonsia. species are common to Puryear, 1 additional to 



Bumelia pseuilotonax. Wickliffe, and 1 additional to Boaz, making a 



Coml. return ovalis. 1,-,^.,! ,,f jj speci(>s that rang(> from beds near 



Cordia (') lomi. ^j^^, ,^,^^^^ j^^ jj^^^ yf ^,^^ ^yjj^^^ 



DiUeiutes ovatus. ' " 



Drvoplivllum moorii. 



Eul-emahiL^araiana. '•"■TS ^-AMP, HKNTON (OUNTV. 



Fatrara hurleyensis. „,, . , . , i, • -.r 1 n 



Ficus monodon. The iron ores that occur m a belt m Marshall, 



Ficus occidentalLs. Benton, and Lafayette counties, Miss., in the 



Ficu.s purycarcnsis. lower ])ai'l of tlie Wilcox group bear an inti- 



FioiLs Pchimperi. ,-)^,,(j. i-elatiou to tlic palustrine and lagoon 



Glediisiophylh.m hik-ardianuni. rhara<-tcr of carlv Wilcox plivsical con.litions. 



Ma^'iiolia leei. '" southern Benton County these ores are 



Mespilodaphno colisnitira. Worked ui a small Way in a h)cality known as the 



Mimuso])s eolignitira. Potts Camp district .' Tliev occur ill the Acker- 



MjTcia be„tonen.is. ^^^^^ formation, tile lowest" of the three forma- 



M-\Tica ohranoidos. . . i . '1 1 -.tt-i t -m- ■ 



Kectandra lanrifolia. tlOllS Ulto which the \A llcox group ot MlSSlS- 



Nectandra pseudocoriaroa. sippi is divided. The general character of 



Oreodapbne obtusifolia. tj^^gg ly^,^\^ i^. indicated by the following section 



Oreodaphne piirvoaronsis. « ,, i 1 -i i j' \ i : , m, ,,.< ,,,t 



Osmanthus podatu.s. o^ ^^'^' cut 1 mile east of Ack.M-man m Choctaw 



Pisonia clilorophylloides. County, as given by Crider and Lowe: 



Scclion of Aclcrman foriDdtion 1 mile cast nf Arhcrman. .Vi>s. 



1. Sandstone and sands wliirh have been cemented inlo a ferruginoii.s maw capping the ridge: in Feet. 



])laees this sandstone is 10 to 15 feet thick -'J 



2. Yellow stratified sand 1" 



:i lied of lignite, which is nut contimnnis Imt changes laterally into a dark lignitie clay; more or 



less sand and mica throughout the mass of lignite and lignitie ela^- ■) 



4. Dark-blue clay weathering to gray '' j 



5. Impure lignite ^ 



G. Choeolato-colored joint clay '^ 



7. Tliin band of ferruginous sandstone i 



8. Dark-blue clay, similar to that of .\o. -1 -1^ 



9. Laminated dark clay *' 



10, Laminated clay in whii'h thin ferruginous Ininds alternate with soft chocolate clay 5 



11. Gray micaceous joint clay, weathering to white 5 



In the Potts Camp area extensive exposures bencnith whicii is a 10 to 20 incli seam of car- 

 are lacking. Reddish sands a few feet in thick- bonate or spathic iron, underlain by an undc- 

 ness overlie a 15-mcli more or less nodular termined thickness of clay. This ore is of 

 seam of brown oxide ore, which was probaljly nearly theoretic purity and marks a horizon 

 deposited as carbonate. This is underlain by that can be traced for several miles in discon- 

 about 40 feet of gray, more or less lignitie clay, tinuous exposures. It beare every indication 



' Lowe, K, N,, Preliminary report ou the iron ores of Mississippi- Mississippi Oeol, Survey liull. 10, 19i:i, 



